Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Saturday & Sunday
A diffuse trough lingers over the Pacific Northwest with weak disturbances moving across the region on NW flow. Each disturbance spawns or maintains scattered to isolated snow shower activity or weak convergence zones as they pass, taking advantage of the moisture in place at low levels of the atmosphere. The first such feature stays offshore, tracking into southern Oregon today. A weaker feature crosses our mountains tonight. We're keeping a chance of precipitation in the forecast throughout the short-term forecast, but any snow accumulation should be very light.
Temperatures have cooled throughout the region with snow levels well-remaining below the passes and dropping further on Sunday evening.
Northwest flow increases aloft on Sunday evening as a dirty ridge (with precipitation spilling over the top) moves into the nearshore waters. As the low-level moisture becomes increasingly shallow, it is possible that the region will dry out completely by Sunday night.
Weather Forecast
Hurricane Ridge
| Saturday | Partly cloudy with a chance of an isolated snow shower. |
Mt. Baker
| Saturday | Mostly cloudy with isolated snow showers. |
Washington Pass and Leavenworth
| Saturday | Partly cloudy with a chance of isolated snow showers near the Cascade Crest. |
Stevens and Snoqualmie Pass
| Saturday | Cloudy with scattered snow showers becoming isolated in the afternoon. Light W winds through the passes. |
Mt. Rainier, Crystal and White Pass
| Saturday | Mostly cloudy with scattered snow showers becoming isolated in the afternoon. |
Mt. Hood
| Saturday | Cloudy with scattered snow showers becoming isolated in the afternoon. Expect increasing sun breaks by the afternoon. |
Issued: 6:54 AM PST Saturday, December 14, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Morning | Snow Level | 2000' | 1500' | 500' | 1000' | 1500' | 2000' | 2000' | 2000' |
| Saturday Afternoon | Snow Level | 2500' | 2000' | 2000' | 2500' | 2000' | 2500' | 2500' | 2500' |
| Saturday Evening | Snow Level | 2000' | 1500' | 1000' | 1500' | 2000' | 2000' | 2000' | 2500' |
| Saturday Night | Snow Level | 2000' | 1000' | 500' | 1000' | 1500' | 1500' | 1500' | 2000' |
| Sunday Morning | Snow Level | 1500' | 1000' | 0' | 500' | 1000' | 1500' | 1500' | 1500' |
| Sunday Afternoon | Snow Level | 2000' | 1000' | 1000' | 1500' | 1500' | 1500' | 2000' | 2000' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2000' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 1500' |
| Sunday Afternoon |
Snow Level 2000' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning |
Snow Level 1500' |
| Saturday Afternoon |
Snow Level 2000' |
| Saturday Evening |
Snow Level 1500' |
| Saturday Night |
Snow Level 1000' |
| Sunday Morning |
Snow Level 1000' |
| Sunday Afternoon |
Snow Level 1000' |
| Washington Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 500' |
| Saturday Afternoon |
Snow Level 2000' |
| Saturday Evening |
Snow Level 1000' |
| Saturday Night |
Snow Level 500' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 1000' |
| Leavenworth | Elevation |
|---|---|
| Saturday Morning |
Snow Level 1000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 1500' |
| Saturday Night |
Snow Level 1000' |
| Sunday Morning |
Snow Level 500' |
| Sunday Afternoon |
Snow Level 1500' |
| Stevens Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 1500' |
| Saturday Afternoon |
Snow Level 2000' |
| Saturday Evening |
Snow Level 2000' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1000' |
| Sunday Afternoon |
Snow Level 1500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2000' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1500' |
| Sunday Afternoon |
Snow Level 1500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2000' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1500' |
| Sunday Afternoon |
Snow Level 2000' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 1500' |
| Sunday Afternoon |
Snow Level 2000' |
* Easterly flow in the Cascade Passes can cause locally lower Snow or Freezing levels than areas further west.
Freezing Level is when no precipitation is forecast.
Precipitation Forecast
| Saturday | Saturday Night | Sunday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 | 0 |
| Washington Pass | 0 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 |
| Stevens Pass | LT 0.10 | 0 | LT 0.10 |
| Snoqualmie Pass | LT 0.10 | LT 0.10 | LT 0.10 |
| Mission Ridge | 0 | 0 | 0 |
| Crystal Mt | LT 0.10 | 0 | 0 |
| Paradise | LT 0.25 | LT 0.10 | 0 |
| White Pass | LT 0.10 | 0 | 0 |
| Mt Hood Meadows | LT 0.10 | 0 | 0 |
| Timberline | LT 0.25 | LT 0.10 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0 |
| Sunday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Sunday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0 |
| Sunday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0 |
| Sunday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Sunday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0 |
| Sunday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Sunday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Saturday | LT 0.25 |
| Saturday Night | LT 0.10 |
| Sunday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Sunday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Sunday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Saturday | LT 0.25 |
| Saturday Night | LT 0.10 |
| Sunday | 0 |
LT = less than; WE or Water equivalent is the liquid water equivalent of melted snow in hundredths of inches. As a rough approximation 1 inch of snow = about .10 inches WE, or 10 inches of snow = about 1 inch WE.
Issued: 6:54 AM PST Saturday, December 14, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | WSW 0 - 10 | SSW 0 - 10 | W 0 - 10 | W 5 - 15 | W 10 - 20 |
| Saturday Afternoon | W 0 - 10 | SW 0 - 10 | W 0 - 10 | WSW 0 - 10 | W 5 - 15 |
| Saturday Evening | W 0 - 10 | SSW 0 - 10 | W 0 - 10 | W 0 - 10 | W 0 - 10 |
| Saturday Night | W 5 - 15 | WSW 5 - 15 | W 5 - 15 | W 5 - 15 | W 5 - 15 |
| Sunday Morning | W 5 - 15 | W 5 - 15 | W 5 - 15 | W 5 - 15 | W 10 - 20 |
| Sunday Afternoon | WSW 0 - 10 | WSW 0 - 10 | W 5 - 15 | W 5 - 15 | W 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning | WSW 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | WSW 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning | SSW 0 - 10 |
| Saturday Afternoon | SW 0 - 10 |
| Saturday Evening | SSW 0 - 10 |
| Saturday Night | WSW 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning | W 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Morning | W 5 - 15 |
| Saturday Afternoon | WSW 0 - 10 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 5 - 15 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 10 - 20 |
| Sunday Afternoon | W 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Morning | WSW 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | WSW 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | SSW 0 - 10 |
| Saturday Afternoon | SW 0 - 10 |
| Saturday Evening | SSW 0 - 10 |
| Saturday Night | WSW 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | W 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | W 5 - 15 |
| Saturday Afternoon | WSW 0 - 10 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 5 - 15 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 10 - 20 |
| Sunday Afternoon | W 10 - 20 |
Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | W 5 - 15 | W 5 - 15 | W 10 - 20 | W 15 - 25 | W 15 - 25 |
| Saturday Afternoon | W 5 - 15 | W 5 - 15 | W 10 - 20 | W 10 - 20 | W 10 - 20 |
| Saturday Evening | WNW 10 - 20 | WNW 5 - 15 | WNW 15 - 25 | WNW 10 - 20 | WNW 5 - 15 |
| Saturday Night | WNW 15 - 25 | WNW 15 - 25 | WNW 25 - 35 | WNW 20 - 30 | WNW 15 - 25 |
| Sunday Morning | W 10 - 20 | W 15 - 25 | WNW 25 - 35 | WNW 20 - 30 | WNW 15 - 25 |
| Sunday Afternoon | WNW 10 - 20 | WNW 10 - 20 | WNW 25 - 35 | WSW 20 - 30 | WNW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | W 5 - 15 |
| Saturday Afternoon | W 5 - 15 |
| Saturday Evening | WNW 10 - 20 |
| Saturday Night | WNW 15 - 25 |
| Sunday Morning | W 10 - 20 |
| Sunday Afternoon | WNW 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Morning | W 5 - 15 |
| Saturday Afternoon | W 5 - 15 |
| Saturday Evening | WNW 5 - 15 |
| Saturday Night | WNW 15 - 25 |
| Sunday Morning | W 15 - 25 |
| Sunday Afternoon | WNW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 10 - 20 |
| Saturday Evening | WNW 15 - 25 |
| Saturday Night | WNW 25 - 35 |
| Sunday Morning | WNW 25 - 35 |
| Sunday Afternoon | WNW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | W 15 - 25 |
| Saturday Afternoon | W 10 - 20 |
| Saturday Evening | WNW 10 - 20 |
| Saturday Night | WNW 20 - 30 |
| Sunday Morning | WNW 20 - 30 |
| Sunday Afternoon | WSW 20 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | W 15 - 25 |
| Saturday Afternoon | W 10 - 20 |
| Saturday Evening | WNW 5 - 15 |
| Saturday Night | WNW 15 - 25 |
| Sunday Morning | WNW 15 - 25 |
| Sunday Afternoon | WNW 20 - 30 |
Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Dec 13, 2019
The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.